Determination of hydroxyl radicals in an advanced oxidation process with salicylic acid trapping and liquid chromatography
Determination of hydroxyl radicals in an advanced oxidation process with salicylic acid trapping and liquid chromatography
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DOI：
10.1016/s0021-9673(97)01019-4
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发表时间：
1998-02-20
影响因子：
4.1
通讯作者：
Yang, TC
中科院分区：
文献类型：
--
作者：
Jen, JF;Leu, MF;Yang, TC
在高级氧化过程中，水杨酸与羟基自由基发生捕集反应，然后用液相色谱法间接检测羟基自由基。通过对水杨酸伯羟基衍生物的定量测定，对羟基自由基的浓度进行了相对评价。考察了水杨酸与过氧化氢的配比、捕集时间等因素对捕集反应的影响，并对该方法的适用性进行了研究。从控制条件下的重复测试的相对标准偏差低，该方法被发现是适用于水处理的高级氧化过程中的羟基自由基的生成速率或浓度的测定。(C)1998年Elsevier Science B.V.
Liquid chromatography was used indirectly to detect hydroxyl radicals after a trapping reaction with salicylic acid in an advanced oxidation process. Through the quantitative determination of primary hydroxylated derivatives of salicylic acid, the concentration of hydroxyl radicals was evaluated relatively. Factors affecting the trapping reaction, such as the ratio of salicylic acid to hydrogen peroxide and trapping time, as well as the applicability of the method, were investigated. From the low relative standard deviation for replicate tests under controlled conditions, the method was found to be applicable to the determination of the generation rate or the concentrations of hydroxyl radicals in advanced oxidation processes for water treatment. (C) 1998 Elsevier Science B.V.